Cost and schedule comparison and risk analysis for pile foundation systems

桩基础系统的成本和进度比较以及风险分析

• 批准号: 499236-2016
• 负责人: Lu, Ming
• 金额: $ 0.58万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=607282
• 关键词: Cost; schedule; comparison; risk; analysis

A foundation acts as the load transfer media from the superstructure to the underlying soil or rock. It is essential to systematically consider various foundation types and to select the optimum alternative based on the superstructure requirements, the underground conditions, and economy. From the perspective of engineering design, different pile foundation systems can be feasible alternatives to fulfill the same purpose (i.e. satisfying identical loading requirements in identical soil conditions). However, a potential foundation solution may appear to be the most economical from a pure design standpoint, but may not be the most economical when limitations on construction activities are fully considered. Through the previous Engage Grant, PI's construction engineering & management (CEM) research group at the University of Alberta has successfully collaborated with Almita in cost and schedule comparison of each of the three foundation systems named above, keeping technical performance constant. Though substantial outputs had been generated from the Engage Grant, these factors as identified justify the need of extended research in order to evaluate cost, duration and risks of piling foundation construction systems in a comprehensive, sophisticated fashion in collaboration with Almita. Upon realization of the objectives in a follow-up Engagement Plus grant, the U of A research team will lend effective decision-support to Almita in the form of a technical report summarizing all the findings and a computer simulation tool along with Excel spreadsheet interface for helical pile engineering and construction in the near future.

基础作为荷载从上部结构传递到下层土壤或岩石的媒介。必须系统地考虑各种基础类型，并根据上部结构要求、地下条件和经济性选择最佳方案。从工程设计的角度来看，不同的桩基系统可以是可行的替代方案，以实现相同的目的（即在相同的土壤条件下满足相同的荷载要求）。然而，从纯设计的角度来看，潜在的基础解决方案可能是最经济的，但当充分考虑施工活动的限制时，可能不是最经济的。通过之前的Engage Grant，PI在阿尔伯塔大学的建筑工程与管理（CEM）研究小组成功地与Almita合作，对上述三种基础系统中的每一种进行了成本和进度比较，保持了技术性能不变。虽然参与补助金产生了大量产出，但这些确定的因素证明了扩展研究的必要性，以便与Almita合作，以全面，复杂的方式评估桩基施工系统的成本，工期和风险。在后续的Engagement Plus赠款中实现目标后，U of A研究团队将在不久的将来以技术报告的形式向Almita提供有效的决策支持，该报告总结了所有调查结果和带有Excel电子表格界面的计算机模拟工具沿着，用于螺旋桩工程和施工。